For some time FF 3.5 has been really getting on my tits. For some reason after it has been opened for a few hrs, it becomes really, really slow and eventually ends up crashing where I then need to restart it, and its then again fine, for a bit of time...

I've tried disabling pretty much all the pulgins and this still happens...

Right now its using 34% of my CPUs, which is over one of my four CPUs just trying to cope with the strain of FF, as well as it chewing up a lot of RAM, that really doesn't sound right to me...

I didn't have any of these problems with FF 3.0, and one of 3.5's biggest features is its meant to be faster...

I'm running on Windows XP x64 edition, 6gbs of ram, etc etc.

Any one have any ideas why this might be happening? My best guess is that for some reason FF 3.5 doesn't like XP x64 but that doesn't give me a lot to go on. Thinking of going back to FF 3.0 unless I can resolve this issue.